Double-link-rod operating mechanism for circuit breaker accessory

Abstract

The utility model discloses a duplex-rod operating mechanism for a circuit breaker accessory, and the mechanism comprises a housing, and also comprises a plurality of connecting rods, the operating handle is pivotally arranged on the shell; the movable contact plate is pivotally arranged on the shell, and an elastic piece is arranged at one end of the movable contact plate and acts on the inner wall of the shell, so that the movable contact plate at the other end is upwarped; the identification block is arranged on one side of the operating handle in a sliding manner; the operating handle is provided with a first connecting rod and a second connecting rod, the first connecting rod is hinged to the identification block, the second connecting rod is hinged to the movable contact plate close to the upwarp position, and when the operating handle is rotated, the identification block is made to be close to the operating handle, the upwarp movable contact plate is made to be pressed downwards, and the switching-on action is conducted. Through the design of the double-connecting-rod structure, the overall structure of the operating mechanism is simplified, the number of parts is reduced, the failure rate is remarkably reduced, the assembly efficiency is improved, and the product has the advantages of reducing the failure rate and reducing the manufacturing cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker technical field especially relates to a kind of double rod operating mechanism for circuit breaker accessory. BACKGROUND

[0002] Circuit breaker accessory is the derivative and supplement of circuit breaker function, which increases control means and expands protection function for circuit breaker, so that the use range of circuit breaker is wider, and protection function is more complete.

[0003] Common circuit breaker accessory is equipped with auxiliary contact and movable contact arranged between two auxiliary contacts, and the auxiliary contact can be electrically connected with signal lamp, relay, indicator lamp, buzzer and other electronic devices to display or remind the fault tripping state of circuit breaker. The circuit breaker accessory is usually provided with an identification block for observation by the staff, and the identification block displays the on-off state of the circuit breaker accessory. In order to make the identification block and the movable contact move together, an operating mechanism is usually used in the circuit breaker accessory, and a series of complex on-off actions and state display operations are realized through the precise linkage of various components. However, this design not only increases the complexity of the operating mechanism, but also affects the assembly efficiency. Therefore, the applicant has made beneficial design and found a method to solve the above problems. The technical scheme to be introduced below is generated in this background. SUMMARY

[0004] The utility model discloses a kind of to overcome the deficiencies of the above-mentioned traditional circuit breaker accessory design, provide a product with reduced failure rate and reduced manufacturing cost.

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] A double rod operating mechanism for circuit breaker accessory includes a housing, and further includes: an operating handle pivotally arranged in the housing; a movable contact plate pivotally arranged in the housing, one end of the movable contact plate is provided with an elastic member, and the elastic member acts on the inner wall of the housing to make the other end of the movable contact plate upwardly bent; and an identification block slidingly arranged on one side of the operating handle; the operating handle is provided with a first connecting rod and a second connecting rod, the first connecting rod is hingedly connected to the identification block, and the second connecting rod is hingedly connected to the movable contact plate near the upwardly bent position; when the operating handle is rotated, the identification block is moved close to the operating handle, and the upwardly bent movable contact plate is pressed down to perform a closing operation.

[0007] Preferably, the housing is provided with two terminal blocks, one of which is provided with a conductive plate, and the conductive plate is provided with a stationary contact.

[0008] Preferably, the housing is provided with a guide groove near the stationary contact, and the housing is provided with an inclined first limiting portion near the other terminal block without the conductive plate.

[0009] Preferably, one end of the movable contact plate is in abutment with the first limiting part, the movable contact plate is electrically connected with the terminal without the conductive plate through the flexible connecting wire, the movable contact plate is provided with a convex bump for preventing displacement of the elastic element, both sides of the convex bump are provided with the second limiting part, the shell is further provided with a groove for preventing displacement of the elastic element, and the elastic element is a spring.

[0010] Preferably, the other end of the movable contact plate is provided with a bending part, the conductive pressure plate is arranged in extension of the bending part, the conductive pressure plate is provided with the movable contact head and is located above the fixed contact head, both sides of the conductive pressure plate are provided with the linkage hole and are close to the bending part.

[0011] Preferably, the shell is provided with a plurality of protruding parts at equal intervals and is arranged between the fixed contact head and the movable contact head.

[0012] Preferably, the second connecting rod passes through the linkage hole and is arranged in sliding mode in the guide groove.

[0013] Preferably, the identification block is provided with an identification area with different identification colors.

[0014] Preferably, the shell is provided with an observation window and is located above the identification area, and the shell is further provided with a first guide plate and a second guide plate for providing a guiding effect for the identification block.

[0015] Preferably, the operation handle is provided with a pushing part, and the first connecting rod and the second connecting rod are hinged to both ends of the pushing part.

[0016] Beneficial effects:

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The utility model discloses a linkage design of the first connecting rod and the second connecting rod, realizes the synchronous action of the identification block and the movable contact plate, thereby instantaneously and accurately displaying the on-off state of the product, in addition, the elastic element provides stable reset force and supporting force for one end of the movable contact plate, only needs to apply downward pressure to the other end of the movable contact plate, can realize the close abutment of the movable contact head and the fixed contact head, forms the conduction state, this double connecting rod structure not only simplifies the overall structure of the operating mechanism, reduces the number of parts, also significantly reduces the failure rate, improves the assembly efficiency, therefore, the product shows the remarkable advantage in the reduction of failure rate and manufacturing cost. ACCURATE DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is the front view of a double linkage rod operating mechanism for a circuit breaker accessory of the utility model;

[0020] Fig. 2 It is the internal structure schematic view of a double linkage rod operating mechanism for a circuit breaker accessory of the utility model;

[0021] Fig. 3 It is a structure schematic view of a double connecting rod operating mechanism for a circuit breaker accessory of the utility model;

[0022] Fig. 4 It is a structure schematic view of an identification block of a double connecting rod operating mechanism for a circuit breaker accessory of the utility model;

[0023] The corresponding relationship between the reference signs and the component names in the drawings is as follows:

[0024] Reference signs: 1, shell; 2, operating handle; 3, moving contact plate; 4, elastic member; 5, identification block; 6, first connecting rod; 7, second connecting rod; 8, wiring terminal; 11, guide groove; 12, first limiting portion; 13, recess; 14, protruding portion; 15, first guide plate; 16, second guide plate; 17, observation window; 21, pushing portion; 31, convex bump; 32, curved portion; 33, conductive pressing plate; 34, linkage hole; 35, moving contact; 36, second limiting portion; 51, identification area; 81, conductive plate; 82, stationary contact. DETAILED DESCRIPTION

[0025] The technical solutions of the utility model will be described clearly and completely below in combination with embodiments. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] In the description of the utility model, it should be understood that the directions or position relationships indicated by the terms "upper", "lower", "left", "right" and the like are the directions or position relationships shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the utility model.

[0027] In the embodiments of the utility model, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the associated objects before and after are a "or" relationship.

[0028] Reference Example Figs. 1 to 4The utility model provides a kind of double connecting rod operating mechanism for circuit breaker accessory, including shell 1, further include;Operating handle 2, and pivotally arranged in shell 1;Dynamic contact plate 3, and pivotally arranged in shell 1, one end of dynamic contact plate 3 is equipped with elastic element 4, and acts on the inner wall of shell 1, to make the other end of dynamic contact plate 3 upwarp;Marking block 5, and slidingly arranged in the side of operating handle 2;Operating handle 2 is equipped with first connecting rod 6, second connecting rod 7, first connecting rod 6 is hinged to marking block 5, and second connecting rod 7 is hinged to dynamic contact plate 3 close to upwarp position, when rotating operating handle 2, make marking block 5 close to operating handle 2, make upwarp dynamic contact plate 3 press down, for making closing action, by the linkage design of first connecting rod 6 and second connecting rod 7, the synchronous action of marking block 5 and dynamic contact plate 3 is realized, to show the on-off state of product promptly and accurately;In addition, with the aid of elastic element 4, one end of dynamic contact plate 3 is provided with stable reset force and support force, just need to apply downward pressure to the other end of dynamic contact plate 3, to realize the close abutment of dynamic contact 35 and static contact 82, form conduction state;This double connecting rod structure not only simplifies the overall structure of operating mechanism, reduces the number of parts, also significantly reduces failure rate, improves assembly efficiency, therefore, the product shows significant advantages in reducing failure rate and manufacturing cost;

[0029] It is worth mentioning that the two ends of the shell 1 are provided with terminal blocks 8, one of which is provided with a conductive plate 81, and the conductive plate 81 is provided with a static contact 82, which serves to transmit current.

[0030] It is worth mentioning that the shell 1 is provided with a guide groove 11 close to the static contact 82, and the shell 1 is provided with an inclined first limiting portion 12 close to the other terminal block 8 without a conductive plate 81. The guide groove 11 provides a guide function for the movement of the second connecting rod 7, ensuring that the dynamic contact 35 accurately abuts the axis of the static contact 82. The first limiting portion 12 and the guide groove 11 also limit the inclination angle of the dynamic contact plate 3.

[0031] It is worth mentioning that one end of the dynamic contact plate 3 abuts against the first limiting portion 12, and the dynamic contact plate 3 is electrically connected to the terminal block 8 without a conductive plate 81 through a flexible connecting wire. The dynamic contact plate 3 is provided with a convex bump 31 that prevents displacement of the elastic element 4. The two sides of the convex bump 31 are provided with a second limiting portion 36. The shell 1 is also provided with a groove 13 for preventing displacement of the elastic element 4. The elastic element 4 is a spring. The flexible connecting wire (not shown) can be made of copper braided wire or conductive wire, which is a prior art and will not be described in detail. The second limiting portion 36 cooperates with the convex bump 31 to further prevent the elastic element 4 from disengaging during assembly, thereby further accelerating the assembly speed.

[0032] It is worth mentioning that the other end of the moving contact plate 3 is provided with a bending part 32, the bending part 32 is provided with a conductive pressure plate 33, the conductive pressure plate 33 is provided with a moving contact 35 and is located above the static contact 82, both sides of the conductive pressure plate 33 are provided with a linkage hole 34 and are close to the bending part 32, the conductive pressure plate 33 is lower than the moving contact plate 3, forming a staggered structure design, the moving contact 35 plays a role in transmitting current, and the linkage hole 34 cooperates with the second linkage plate to make linkage action;

[0033] It is worth mentioning that the shell 1 is provided with a plurality of protrusions 14 at equal intervals and is arranged between the static contact 82 and the moving contact 35, when the moving contact 35 is separated from the static contact 82, the arc generated increases the creepage distance through the protrusion 14, ensuring the electrical performance;

[0034] It is worth mentioning that the second linkage rod 7 passes through the linkage hole 34 and is slidingly arranged in the guide groove 11;

[0035] It is worth mentioning that the identification block 5 is provided with an identification area 51 with different identification colors, the identification area 51 is usually provided with two, one of which is colored red, representing that the product is in a closed state, and the other is colored green, representing that the product is in an open state;

[0036] It is worth mentioning that the shell 1 is provided with an observation window 17 located above the identification area 51, and the shell 1 is also provided with a first guide plate 15 and a second guide plate 16 for providing a guiding effect for the identification block 5, the staff can directly observe whether the product is in an open state or a closed state through the observation window 17, so as to judge the current state of the circuit breaker, and the first guide plate 15 and the second guide plate 16 also play a role in preventing the identification block 5 from being separated;

[0037] It is worth mentioning that the operating handle 2 is provided with a pushing part 21, the first linkage rod 6 and the second linkage rod 7 are hinged to both ends of the pushing part 21, when opening, the pushing part 21 is close to one side of the identification block 5, when rotating the operating handle 2, the pushing part 21 gradually moves away from the identification block 5 and moves towards the conductive pressure plate 33, and then the first linkage rod 6 and the second linkage rod 7 respectively drive the identification block 5 to move towards the operating handle 2 and drive the conductive pressure plate 33 to move downwards, when the moving contact 35 and the static contact 82 abut, at this time, the moving contact plate 3 is higher than the conductive pressure plate 33, both ends of the wire terminal 8 are conductive, and the red identification area 51 is located below the observation window 17, forming a closed state.

[0038] The above design scheme can realize the advantages of reducing the failure rate and reducing the manufacturing cost of the product.

[0039] The above is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the utility model specific implementation is limited to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope determined by the claims submitted by the utility model.

Claims

1. A duplex lever operating mechanism for a circuit breaker accessory comprising a housing (1), characterised in that: Also include; Operation handle (2), and pivotally arranged in the shell (1); Dynamic touch plate (3), and pivotally arranged in the shell (1), one end of the dynamic touch plate (3) is provided with elastic element (4), and acts on the inner wall of the shell (1), so that the other end of the dynamic touch plate (3) is upturned; Identification block (5), and slidingly arranged on one side of the operation handle (2); The operation handle (2) is provided with first connecting rod (6) and second connecting rod (7), the first connecting rod (6) is hinged to the identification block (5), the second connecting rod (7) is hinged to the dynamic touch plate (3) near the upturned position, when rotating the operation handle (2), make the identification block (5) close to the operation handle (2), make the upturned dynamic touch plate (3) down, for doing the action of closing.

2. The twin lever operating mechanism for a circuit breaker accessory of claim 1, characterized in that: Both ends of the shell (1) are provided with terminal (8), one of the terminal (8) is provided with conductive plate (81), the conductive plate (81) is provided with static contact (82).

3. The twin lever operating mechanism for a circuit breaker accessory of claim 2, characterized in that: The shell (1) is provided with guide groove (11), and is close to the static contact (82), the shell (1) is provided with inclined first limiting portion (12), and is close to another terminal (8) without conductive plate (81).

4. The twin lever operating mechanism for a circuit breaker accessory of claim 3, wherein: One end of the dynamic touch plate (3) is in contact with the first limiting portion (12), the dynamic touch plate (3) is electrically connected with the terminal (8) without conductive plate (81) through the soft connecting line, the dynamic touch plate (3) is provided with convex (31) for preventing displacement of the elastic element (4), both sides of the convex (31) are provided with second limiting portion (36), the shell (1) is further provided with recess (13) for preventing displacement of the elastic element (4), the elastic element (4) is provided as a spring.

5. The twin lever operating mechanism for a circuit breaker accessory of claim 4, wherein: The other end of the dynamic touch plate (3) is provided with bending part (32), the bending part (32) is provided with conductive pressure plate (33), the conductive pressure plate (33) is provided with dynamic contact (35), and is located above the static contact (82), both sides of the conductive pressure plate (33) are provided with linkage hole (34), and are close to the bending part (32).

6. The twin lever operating mechanism for a circuit breaker accessory of claim 3, wherein: The shell (1) is provided with a plurality of equal interval convex portions (14), and is arranged between the static contact (82) and the dynamic contact (35).

7. The twin lever operating mechanism for a circuit breaker accessory of claim 5, wherein: The second connecting rod (7) passes through the linkage hole (34) and is slidingly arranged in the guide groove (11).

8. The twin lever operating mechanism for a circuit breaker accessory of claim 1, wherein: The identification block (5) is provided with identification area (51) with different identification colors.

9. The twin lever operating mechanism for a circuit breaker accessory of claim 8, characterized in that: The shell (1) is provided with observation window (17), and is located above the identification area (51), the shell (1) is further provided with first guide plate (15) and second guide plate (16) for providing guiding effect for the identification block (5).

10. The twin lever operating mechanism for a circuit breaker accessory of any of claims 2 to 9, characterized in that: The operation handle (2) is provided with push part (21), the first connecting rod (6) and the second connecting rod (7) are hinged to both ends of the push part (21).

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